Derrick.



M. J. SASGEN.

Patented Oct. 12, 1915.

2 SHEETSSHEET 1.

In ven 0r MichqeZJSas en W Q DERRICK.

APPLICATION FILED DEC-23,1913.

M. J. SASGEN.

DERRICK.

APPLICATION FILED DEC-23, 1913- Patented Oct. 12, 1915.

2 SHEETS-SHEET 2 Inven or Michael J as en mvirnn AFT r MICHAEL J. SAEGEN, CF CH IGI G'G, ELLINOIS, ASSIGNOR TO SASGEN DERRICK COMPANY,

CF CHICAGO, ILE-IE OIS, A CORPORATION OF ILLINOIS.

DERRICK.

To all whom it may concern.

Be it known that 1, MICH EL J. Sasenn, a citizen of the. United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Derricks, of which the following is a specification.

The derrick of the present invention re lates to that type known as the circle swing portable derrick used in building constructions mainly for the hoisting o'f the lighter materials, and adapted to be moved from floor to floor as the building is erected.

()ne of the objects of the present invention is to produce a derrick of thetabove class which is simple and strong of construction.

Further objects of the present invention are to produce a derrick composed of but a relatively fewparts when the various char:

acteristics which it possesses are takeninto consideration; to provide; a sheave-mounting on the outer endof the boom which will be arranged to simultaneously receive two sheaves or sets of sheaves, thus eliminating the changing of booms when the derrick is changed from a hand-operated.typeto a power-operated type, or vice-versa to provide an auxiliary sheave for use when the derrick is poweroperated, which sheave will be held in place by the same locking means that connect the boom with the member which joins it to the upper end of the mast; to produce a simple mountingfor the drum, and to provide means for removing the drum without disorganizing toa-ny material extent the general arrangement ofthe derrick structure; to provide means for locking the mast to the base, and to utilize certain of these locking means as a hinge to ena-.

ble the mast to be swung down upon thebase and into folded condition; to provide means for locking together the members whicl compose the base section, and to utilize this locking means as a hinge by means of which one of the members of the base section can be swung into parallelism with the other,

thus folding the basesection; to make the derrick structure of a general knock-down type whereby it may be easily t 'anspoi-ted from place to place as desired; and a further object resides in a novel method employed for joining the cable to thedrum.

The invention further consists in the fea tures of construction and combinations of parts hereinafter described and claimed.

Specification of Letters Patent.

Patented Oct. 12, 1915.

Serial No. soaseo.

In the drawings: ld'igure 1 is a side'eleva- .view showing the connection between the mast andthe base, and the connection between the members composing the base section; Fig. 7 isa section showing the mounting for the auxiliary sheave; Fig. 8 is a face view of a portion of the drum showing the means for attaching thecable thereto; and Fig. 9 is across section on line 99 of Fig. 8, looking in the direction of the arrows.

Referring to the drawings, and'particularly to Fig. 1, the derrick is composed of three main sections, a base section 10, amast'll, and aboom The boom is of a triangular. nature comprising a lower leg or rail 13, an upper leg or rail 14, and.- a vertical tie orsupport 15 between said legs. The entire boom is, in the construction shown, made of metal, preferably angle iron, and attached to the outer end of the boom is a sheave-frame 16, which is formed, in the constructionshown, from a single casting or; other .metal structure. This I sheave-frame serves as a mounting for a and are so arranged as to enable one of them to be actuated while the other remains idle in position. This enables two setsof sheaves to be employed simultaneously, whereby the cable maybe strung for operation ofthe derrick by hand or by power without changing the boom. It will be noted that the sheaves do not extend in vertical parallelism' one below the other,v and they are so arranged as to enable one to operate without interference with the other. I

The mast 11 is, iirthe construction shown, formed of metal, and is of hollow formation. By this arrangement, the cable can be passed down through the mast whenever from an engine located below, and an auxiliary sheave 19 is employed which is mounted within a frame 20, which frame is secured in place by locking members 21 that extend through the base of the frame and through a casting or other metal part 22, which forms the connection between the boom and the upper end of the mast, and, therefore,

' end of the mast, which pintle is formed with or connected to a cap-piece 26. When the derrick is to be operated by hand-power, the cable is wound upon a drum 27 actuated by a suitable crank 28. The drum is pro vided with trunnions 29 upon which are mounted a ratchet 39 and a disk 31, the ratchet being engaged by a pawl 32, and the disk 31 has its periphery engaged by a strap 33 forming in effect a band brake. This strap is actuated by a handle34.

The mounting for the drum consists of companion plate-like members 35 which are arranged to lie upon opposite sides of the lower leg 13 of the boom 12. One of these plates is provided with lugs or bosses 36 and 37 the lug 36 formin a mounting for the pawl 32, and the lug 3r forming a mounting for the brake handle '34.

Each of the plates is. formedwith a U- shapedislot 38 into which slot is inserted the trunnion 29 of the drum, together with 'a collar 39 of anti-friction bearing material, which surrounds the trunnion, and the trunnion, together with the bearing, are

held in place by means of a block-like member 40 which is inserted into the open'lower end of the slot 38, and is held in place by suitable locking members as bolts 41. By this arrangement, a support and mountmg for the drum is provided whlch is extremely cheap of manufacture, and which receives and maintains the trunnion of the drum in a manner whereby the dismantling of the drum is rendered simple and easy, andmade possible without a disassemblance of any material number of parts of the device.

'Acasting or other metal part 42 is provided with which the plates 35 are formed or secured, and said casting consists of a semi-cylindrical portion 43, from which extend arms 44, and these arms are arranged to lie upon opposite sides ofthe leg 13 of the boom 12. Looking members 45 are provided which serve to hold the casting and drum-mounting in place.

The semi-cylindrical portion 43 of the casting 42 is seated within a flanged collar 46,'and this collar also receives a semi-circu- 1211' casting or metal part 47 which, in conjunction with the semi-circular portion of the'casting 42, forms a split ring which lies within the flanged collar 46. The semi cylindrical portion of the casting 42 has extending therefrom a lug or thumb 48 which extends through a fiange 49 on the semi-cylindrical member 47, and to this thumb 48 is eccentrically pivoted a look ing member 50, by the operation of which the parts composing the split ring are drawn into engagement witl, or released from engagement with, the flanged collar 46, thereby locking the boom against revolution about the mast, or permitting the boom to swing about the mast as may be desired;

Suitable struts 51 are provided for reinforcing the mast. The mast at its lower end has secured thereto a member 52 which extends about the lower end of the mast, as shown in Fig. 1, and is held thereon by suitable locking members. This member 52 is provided with a set of cars 53 and a'set oft ears 54 arranged to lie upon opposite sides oi the mast, as shown more clearly in Fig. The base section is composed 01" a member 55 and a member lying, as shown in Fig. 6, at right angles to one another when the derrick is in use; Attached to the member 55 is a casting 57 secured thereto by suitable locking means 58. The upper face of this casting is provided with a set of cars 59 and a set of ears 60, the cars 59 being arranged to aline with the cars 54 when the mast is placed upon the base, and the ears 60 with the ears 53 when the mast is so positioned. r

A locking member 61 passes through the ears 60 and 53, each of which ears are provided with an alined opening to permit such passage or the locking member, and each of the ears 54 and 59 is also provided with an alined opening, whereby a locking member 62 can be inserted through these ears. 1V hen the derrick is in operation, the look ing members 61 and 62 serve to maintain the mast in rigid position as respects the base. VVhen', however, the derrick is to be transported, the locking membertil may be removed, and then the locking member 62 will act as a vpivot or hinge, whereby the mast may be laid downward upon, and on top of, the base member 55, thus folding this portion 0]": the device in compact form. Prior to this operation, the boom 12 may be removed, which can be very easily done by removing the connection between the members 47 and 42 composing the split rmg. As will be obvious, after removing this connection the boom can be lifted upward until the collar 24 is removed from the pintle 25. The struts 51 are connected to the base by any suitable releasable locking means as a bolt 51 and when it is disconnected may be folded about the pin or other connection (33, and thus the boom and mast can be arranged to lie in a verycomgact condition.

The members 55 and 56 comprising the base section, as stated, normally lie at right angles to one another and are joined together and held in such normal relation by means of locking members 64 and 64: passing througl'i cars 65 on the casting 57 and through ears 66 on a casting or other metal partbi, which latter casting is secured to the member 56 by suitable bolts or looking members 68. hen the locking members (i l: and 64; are both in position, the members and 56 are maintained at right angles to one another, and this is the position they assume when the derrick is in operation, but should the locking member 6% be removed, then the locking member 6i" will serve as a hinge or pivot about which the member 56 can be swung to place it in the position shown in dotted lines in Fig. (i, or in a position whereby it extends parallel with the member 55 in place of at right angles to said member, and this e11- ables the base section to be folded into compact form for transportation purposes.

The drum 69, as shown in Figs. 8 and 9, isprovided with flanges 70, and adjacent to one of these flanges is a slot or opening 71 comprising an enlarged portion 72 and a reduced portion 73, and in the construction shown is similar to a button-hole slot. At the juncture of the enlarged and reduced portions of said slot is a lip 74. The end of the cable is initially inserted within the enlarged portion, as shown in Fig. 8, and is then driven down into the small portion, as shown in Fig. 9, whereby it is compressed and securely held within the slot; then by tapping the lip 74: with a hammer or other instrument, the opening (5 between the enla rged and reduced portions of the slot may be contracted, thus firmly securing the cable in place. When it is desired to remove the cable, it is driven out from the reduced portion of the slot and into the enlarged portion. This provides a means for attaching the cable to the drum, which is simple and which permits of the ready removal, or connecting of the cable from or with the drum, as the occasion demands.

From the foregoing, it will be seen that the entire derrick can be quickly and easily folded into position for transportation and can be quickly and easily reassembled in operative position when desired.

lhe structure above described with particularity is, of course, subject to variations in construction, and it is not the intention to limit the scope of the present invention other than by the terms of the appended claims.

I claim:

1. In a derrick, the combination of a base, a mast extending from the base, a boom exabout which the mast is swung into folded condition upon the base, substantially as described.

2. in a derrick, the combination of a base, a mast extending from the base, a boom extending from the mast, a freely detachable connection between the boom and mast, companion sets of ears on the base, companion sets of ears on the lower end of the mast, said latter ears being arranged to aline with the ears on the base and a horizontally disposed removable locking member passing through each alined set of ears, said members extending in the same direction, one of said locking members serving, when the other locking member is removed, as a pivot about which the mast is swung into folded condition upon the base, substantially as described.

3. In a derrick, the combination of a base, a mast extending from the base, a boom extending from the mast, said base comprising members arranged at right angles to one another and companion oppositely disposed parallelly extending members arranged at the juncture of the base, members for locking said base members together, one of said locking members serving, when the other locking member is removed, as a pivot about which one of said base members is swung into parallel relation with the other base member, substantially as described.

4. In a derrick, the combination of a base, a mast extending from the base, a boom eX- tending from the mast, said base comprising right angled members, an end piece on each of said base members, each of said end pieces being formed with oppositely disposed apertured ears, the ears on one memher being arranged to aline with the ears on the other member when said members are in. angled relation, and a removable member passing through the apertures of each set of alined ears and acting as looking members, one of said locking members serving, when the other locking member is re moved,-as a pivot about which one of said base members is swung into parallel relation with the other base member, substantially as described In a derrick, the combination of a mast having a longitudinal bore therethrough, a

boom extending from the mast, a drum lying on the under side of the boom, a sheave frame on the outer end of the boom, said frame being arranged to simultaneously receive a lower and upper sheave, said lower sheave beingadapted to receive a cable passing to the drum, and saiduppersheave being adapted to receive a cable passing to the bore in the mast, substantially as described.

6. In a derrick, the combination of a mast, a boom extending from the mast, a flanged collar secured to the mast intermediate the ends of the mast, a drum, a mounting for the drum formed of a single piece of metal embodying companion plates joined together by a semi-circular web arranged to fit the collar, said web extending in ,a horizontal plane and the body of the plate extending the same against and release the same from V engagement withthe collar whereby a lock for the boom is provided, substantially as described.

MICHAEL J. SASGEN.

lVitnesses WM. P. BOND, THOMAS A. BANNING, Jr.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

